UNLOCK! Secret Adventures is the first UNLOCK! escape adventure game to come into U.S. trade in a new big box format. This game includes  the three Secret Adventures released back in 2018 all in one box: A Noside Story, Tombstone Express, and The Adventures of Oz (see "New Trio of 'Unlock! Secret Adventures'"). A Noside Story is a cartoon-style adventure game featuring Professor Noside, and Tombstone Express is a western with gun-slinging action. In The Adventurers of Oz, players visit Oz, the Wizard, and battle the Wicked Witch of the West.

The game box contains a 10-card Tutorial deck and 3 Adventures (186 cards plus tokens). It is for one to six players, ages 10 and up, plays in 60 minutes, and will retail for $29.99.